X-Git-Url: http://git.archive.openwrt.org/?p=project%2Flibubox.git;a=blobdiff_plain;f=sh%2Fjshn.sh;h=dab40e4fdfcf89a60f2538fbd0e38b2f685feacf;hp=923f2b36318136a51b4f66147ff6f7c4980267be;hb=d59fa8d58844f3d6fad70a540a73ee6290613dd4;hpb=fda6079b30a4f47daf95c8b93b9c86afee008f45

diff --git a/sh/jshn.sh b/sh/jshn.sh
index 923f2b3..dab40e4 100644
--- a/sh/jshn.sh
+++ b/sh/jshn.sh
@@ -1,115 +1,283 @@
 # functions for parsing and generating json
 
-append() {
-	local var="$1"
+_json_get_var() {
+	# dest=$1
+	# var=$2
+	eval "$1=\"\$${JSON_PREFIX}$2\""
+}
+
+_json_set_var() {
+	# var=$1
+	local ___val="$2"
+	eval "${JSON_PREFIX}$1=\"\$___val\""
+}
+
+__jshn_raw_append() {
+	# var=$1
 	local value="$2"
 	local sep="${3:- }"
 
-	eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+	eval "export -- \"$1=\${$1:+\${$1}\${value:+\$sep}}\$value\""
 }
 
-json_init() {
-	[ -n "$JSON_UNSET" ] && eval "unset $JSON_UNSET"
-	export -- JSON_SEQ=0 JSON_STACK= JSON_CUR="JSON_VAR" JSON_UNSET=
+_jshn_append() {
+	# var=$1
+	local _a_value="$2"
+	eval "${JSON_PREFIX}$1=\"\${${JSON_PREFIX}$1} \$_a_value\""
+}
+
+_get_var() {
+	# var=$1
+	# value=$2
+	eval "$1=\"\$$2\""
+}
+
+_set_var() {
+	# var=$1
+	local __val="$2"
+	eval "$1=\"\$__val\""
+}
+
+_json_inc() {
+	# var=$1
+	# dest=$2
+
+	let "${JSON_PREFIX}$1 += 1" "$2 = ${JSON_PREFIX}$1"
+}
+
+_json_add_generic() {
+	# type=$1
+	# name=$2
+	# value=$3
+	# cur=$4
+
+	local var
+	if [ "${4%%[0-9]*}" = "J_A" ]; then
+		_json_inc "S_$4" var
+	else
+		var="${2//[^a-zA-Z0-9_]/_}"
+		[[ "$var" == "$2" ]] || export -- "${JSON_PREFIX}N_${4}_${var}=$2"
+	fi
+
+	export -- \
+		"${JSON_PREFIX}${4}_$var=$3" \
+		"${JSON_PREFIX}T_${4}_$var=$1"
+	_jshn_append "JSON_UNSET" "${4}_$var"
+	_jshn_append "K_$4" "$var"
+}
+
+_json_add_table() {
+	# name=$1
+	# type=$2
+	# itype=$3
+	local cur seq
+
+	_json_get_var cur JSON_CUR
+	_json_inc JSON_SEQ seq
+
+	local table="J_$3$seq"
+	_json_set_var "U_$table" "$cur"
+	export -- "${JSON_PREFIX}K_$table="
+	unset "${JSON_PREFIX}S_$table"
+	_json_set_var JSON_CUR "$table"
+	_jshn_append "JSON_UNSET" "$table"
+
+	_json_add_generic "$2" "$1" "$table" "$cur"
+}
+
+_json_close_table() {
+	local _s_cur
+
+	_json_get_var _s_cur JSON_CUR
+	_json_get_var "${JSON_PREFIX}JSON_CUR" "U_$_s_cur"
+	unset "${JSON_PREFIX}U_$_s_cur"
 }
 
-json_add_generic() {
-	local type="$1"
-	local var="$2"
-	local val="$3"
-	local cur="${4:-$JSON_CUR}"
+json_set_namespace() {
+	local _new="$1"
+	local _old="$2"
 
-	export ${NO_EXPORT:+-n} -- "${cur}_$var=$val"
-	export ${NO_EXPORT:+-n} -- "TYPE_${cur}_$var=$type"
-	append JSON_UNSET "${cur}_$var TYPE_${cur}_$var"
-	append "KEYS_${cur}" "$var"
+	[ -n "$_old" ] && _set_var "$_old" "$JSON_PREFIX"
+	JSON_PREFIX="$_new"
 }
 
-json_add_table() {
-	JSON_SEQ=$(($JSON_SEQ + 1))
-	append JSON_STACK "$JSON_CUR"
-	local table="JSON_TABLE$JSON_SEQ"
-	export ${NO_EXPORT:+-n} -- "UP_$table=$JSON_CUR"
-	JSON_CUR="$table"
+json_cleanup() {
+	local unset tmp
+
+	_json_get_var unset JSON_UNSET
+	for tmp in $unset JSON_VAR; do
+		unset \
+			${JSON_PREFIX}U_$tmp \
+			${JSON_PREFIX}K_$tmp \
+			${JSON_PREFIX}S_$tmp \
+			${JSON_PREFIX}T_$tmp \
+			${JSON_PREFIX}N_$tmp \
+			${JSON_PREFIX}$tmp
+	done
+
+	unset \
+		${JSON_PREFIX}JSON_SEQ \
+		${JSON_PREFIX}JSON_CUR \
+		${JSON_PREFIX}JSON_UNSET
+}
+
+json_init() {
+	json_cleanup
+	export -n ${JSON_PREFIX}JSON_SEQ=0
+	export -- \
+		${JSON_PREFIX}JSON_CUR="JSON_VAR" \
+		${JSON_PREFIX}K_JSON_VAR=
 }
 
 json_add_object() {
-	local cur="$JSON_CUR"
-	json_add_table
-	json_add_generic object "$1" "$JSON_CUR" "$cur"
+	_json_add_table "$1" object T
 }
 
 json_close_object() {
-	local oldstack="$JSON_STACK"
-	export "KEYS_${JSON_CUR}"
-	JSON_CUR="${JSON_STACK##* }"
-	JSON_STACK="${JSON_STACK% *}"
-	[[ "$oldstack" == "$JSON_STACK" ]] && JSON_STACK=
+	_json_close_table
 }
 
 json_add_array() {
-	local cur="$JSON_CUR"
-	json_add_table
-	json_add_generic array "$1" "$JSON_CUR" "$cur"
+	_json_add_table "$1" array A
 }
 
 json_close_array() {
-	json_close_object
+	_json_close_table
 }
 
 json_add_string() {
-	json_add_generic string "$1" "$2"
+	local cur
+	_json_get_var cur JSON_CUR
+	_json_add_generic string "$1" "$2" "$cur"
 }
 
 json_add_int() {
-	json_add_generic int "$1" "$2"
+	local cur
+	_json_get_var cur JSON_CUR
+	_json_add_generic int "$1" "$2" "$cur"
 }
 
 json_add_boolean() {
-	json_add_generic boolean "$1" "$2"
+	local cur
+	_json_get_var cur JSON_CUR
+	_json_add_generic boolean "$1" "$2" "$cur"
+}
+
+json_add_double() {
+	local cur
+	_json_get_var cur JSON_CUR
+	_json_add_generic double "$1" "$2" "$cur"
 }
 
 # functions read access to json variables
 
 json_load() {
-	eval `jshn -r "$1"`
+	eval "`jshn -r "$1"`"
 }
 
 json_dump() {
-	jshn -w
+	jshn "$@" ${JSON_PREFIX:+-p "$JSON_PREFIX"} -w 
 }
 
 json_get_type() {
-	local dest="$1"
-	local var="$2"
-	eval "export ${NO_EXPORT:+-n} -- \"$dest=\${TYPE_${JSON_CUR}_$var}\""
+	local __dest="$1"
+	local __cur
+
+	_json_get_var __cur JSON_CUR
+	local __var="${JSON_PREFIX}T_${__cur}_${2//[^a-zA-Z0-9_]/_}"
+	eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]"
+}
+
+json_get_keys() {
+	local __dest="$1"
+	local _tbl_cur
+
+	if [ -n "$2" ]; then
+		json_get_var _tbl_cur "$2"
+	else
+		_json_get_var _tbl_cur JSON_CUR
+	fi
+	local __var="${JSON_PREFIX}K_${_tbl_cur}"
+	eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]"
+}
+
+json_get_values() {
+	local _v_dest="$1"
+	local _v_keys _v_val _select=
+	local _json_no_warning=1
+
+	unset "$_v_dest"
+	[ -n "$2" ] && {
+		json_select "$2" || return 1
+		_select=1
+	}
+
+	json_get_keys _v_keys
+	set -- $_v_keys
+	while [ "$#" -gt 0 ]; do
+		json_get_var _v_val "$1"
+		__jshn_raw_append "$_v_dest" "$_v_val"
+		shift
+	done
+	[ -n "$_select" ] && json_select ..
+
+	return 0
 }
 
 json_get_var() {
-	local dest="$1"
-	local var="$2"
-	eval "export ${NO_EXPORT:+-n} -- \"$dest=\${${JSON_CUR}_$var}\""
+	local __dest="$1"
+	local __cur
+
+	_json_get_var __cur JSON_CUR
+	local __var="${JSON_PREFIX}${__cur}_${2//[^a-zA-Z0-9_]/_}"
+	eval "export -- \"$__dest=\${$__var:-$3}\"; [ -n \"\${$__var+x}\${3+x}\" ]"
+}
+
+json_get_vars() {
+	while [ "$#" -gt 0 ]; do
+		local _var="$1"; shift
+		if [ "$_var" != "${_var#*:}" ]; then
+			json_get_var "${_var%%:*}" "${_var%%:*}" "${_var#*:}"
+		else
+			json_get_var "$_var" "$_var"
+		fi
+	done
 }
 
 json_select() {
 	local target="$1"
 	local type
+	local cur
 
 	[ -z "$1" ] && {
-		JSON_CUR="JSON_VAR"
-		return
+		_json_set_var JSON_CUR "JSON_VAR"
+		return 0
 	}
 	[[ "$1" == ".." ]] && {
-		eval "JSON_CUR=\"\${UP_$JSON_CUR}\""
-		return;
+		_json_get_var cur JSON_CUR
+		_json_get_var cur "U_$cur"
+		unset "${JSON_PREFIX}U_$cur"
+		_json_set_var JSON_CUR "$cur"
+		return 0
 	}
 	json_get_type type "$target"
 	case "$type" in
 		object|array)
-			json_get_var JSON_CUR "$target"
+			json_get_var cur "$target"
+			_json_get_var "${JSON_PREFIX}U_$cur" JSON_CUR
+			_json_set_var JSON_CUR "$cur"
 		;;
 		*)
-			echo "WARNING: Variable '$target' does not exist or is not an array/object"
+			[ -n "$_json_no_warning" ] || \
+				echo "WARNING: Variable '$target' does not exist or is not an array/object"
+			return 1
 		;;
 	esac
 }
+
+json_is_a() {
+	local type
+
+	json_get_type type "$1"
+	[ "$type" = "$2" ]
+}